Bank of England Adopts Gilt-Based Framework for Backing Banknotes Alongside QT Decision

Key Takeaways

• The Bank of England has announced a long-term framework under which sterling banknotes will be backed primarily by gilts held directly on the Issue Department balance sheet, supplemented by a small Issue Deposit.
• The change follows the MPC's September 2026 decision to set a multi-year path for fully unwinding the Asset Purchase Facility.
• It is explanatory guidance rather than a new rule for firms, but compliance teams should assess its indirect effects on gilt markets, collateral availability, and reserves supply.

Deep Dive

The Bank of England has announced a long-term framework under which sterling banknotes will be backed primarily by gilts held directly on the Issue Department balance sheet, supplemented by a small Issue Deposit. The change follows the MPC's September 2026 decision to set a multi-year path for fully unwinding the Asset Purchase Facility. It is explanatory guidance rather than a new rule for firms, but compliance teams should assess its indirect effects on gilt markets, collateral availability, and reserves supply.

Gilts will be the "majority" backing asset, and a relatively small Issue Deposit will be kept at a baseline size to absorb short-term demand swings. The Issue Deposit is expected to be backed by a portion of Banking Department repo operations. This is meant to avoid unnecessary encumbrance of banking sector collateral. The Bank may, in consultation with HM Treasury, sell gilts before maturity in response to unforeseen demand changes. The reform sits alongside the move to a repo-led reserves framework, in which reserves are lent to banks as needed instead of being created through asset purchases. The Bank describes that transition as already underway. Seigniorage continues to flow to HM Treasury under the Currency and Banknotes Act 1928, and Treasury backstops any shortfall under the National Loans Act 1968.

The article says the Bank will transition over the "medium-term," but the excerpt does not give detailed dates or purchase volumes. The only firm date is that roughly GBP £700 Million of legacy gilts remain on the Issue Department and mature by end-2028. The MPC's multi-year QT path for the APF is the trigger for the framework. The excerpt is truncated, so the full transition details need to be confirmed against the complete publication and the MPC's September 2026 QT announcement.

Recommended actions:

(1) Obtain the full article and the MPC QT materials, and track the Bank's transition schedule.

(2) Have treasury and ALM teams model the impact of direct Issue Department gilt purchases and continued APF sales on gilt supply, liquidity, and pricing.

(3) Review collateral and repo strategies, including reliance on Bank repo facilities and the possible use of collateral to back the Issue Deposit.

(4) Update liquidity risk, contingency funding, and stress-testing assumptions for lower central bank reserves.

(5) Brief senior management and regulatory affairs on the changes, and monitor related PRA and Bank communications.

Direct risk to firms is low and indirect. The main exposures are market and liquidity risk from changes in gilt supply and demand, and funding and collateral risk if reserves become scarcer under a repo-led regime. Banks with large cash and note-handling operations should also watch operational effects. Because the Bank may sell gilts before maturity, the framework retains some uncertainty, though the design is intended to minimize market disruption.

Source: Bank of England